Improper input validation in AMD 1st Gen Epyc™
CVE-2021-26331
AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- AMD 1st Gen Epyc™ — versions unspecified
- AMD 2nd Gen Epyc™ — versions unspecified
- AMD 3rd Gen Epyc™ — versions unspecified
- AMD Epyc 7001
- AMD Epyc 7001 Firmware
- AMD Epyc 7002
- AMD Epyc 7002 Firmware
- AMD Epyc 7003
- AMD Epyc 7003 Firmware
- AMD Epyc 7232p
Weakness classification (CWE)
References
- www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26331?
- CVE-2021-26331 is a high-severity vulnerability in AMD 1st Gen Epyc™, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2021-11-16.
- How severe is CVE-2021-26331?
- High severity. CVSS v3 base score is 7.8 out of 10.